bonjour voici ce que me donne la 1ere commande :
alexandre@alexandre-desktop:~$ lspci | grep [Aa]udio ; lsusb | grep [Aa]udio
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) (rev 40)
01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cedar HDMI Audio [Radeon HD 5400/6300/7300 Series]
alexandre@alexandre-desktop:~$